Area Code +1-301-(3719000...3719999) located in Middletown, Maryland (MD), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 301 Subscriber Number From : 3719000 Subscriber Number To : 3719999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : VERIZON MARYLAND INC Click here to buy United States Area Code Database Other Information Language Code : en (English) Country Number : 840 (United States) Country Code : US (United States) Region Code : MD Region Name : Maryland City : Middletown Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.4400 Longitude : -77.5400 ‹ previous : +1-301-(3718000...3718999) next › : +1-301-(3720000...3720999) Dialling Instructions For trunk calls: 0 301 3719000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3719000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3719000 ~ 3719999 (Count: 1,000) Example: +1-301-3719000 / 0111-301-3719000 (1301-3719000 / 1-301-3719000) +1-301-3719001 / 0111-301-3719001 (1301-3719001 / 1-301-3719001) +1-301-3719002 / 0111-301-3719002 (1301-3719002 / 1-301-3719002) +1-301-3719003 / 0111-301-3719003 (1301-3719003 / 1-301-3719003) +1-301-3719004 / 0111-301-3719004 (1301-3719004 / 1-301-3719004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3719995 / 0111-301-3719995 (1301-3719995 / 1-301-3719995) +1-301-3719996 / 0111-301-3719996 (1301-3719996 / 1-301-3719996) +1-301-3719997 / 0111-301-3719997 (1301-3719997 / 1-301-3719997) +1-301-3719998 / 0111-301-3719998 (1301-3719998 / 1-301-3719998) +1-301-3719999 / 0111-301-3719999 (1301-3719999 / 1-301-3719999)